--- service: a.root-servers.net start-period: '2016-02-07T00:00:00Z' end-period: '2016-02-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3534272367 dns-udp-queries-received-ipv6: 218747026 dns-tcp-queries-received-ipv4: 45654515 dns-tcp-queries-received-ipv6: 1145553 dns-udp-responses-sent-ipv4: 3527552255 dns-udp-responses-sent-ipv6: 219650727 dns-tcp-responses-sent-ipv4: 38710201 dns-tcp-responses-sent-ipv6: 183228